Cummins QSK 19 Engine Parts for Canada - Fuel Pump Section

Cummins QSK19 Fuel Pump & Fuel System Components

The Cummins QSK19 is a high-horsepower diesel engine known for delivering exceptional performance and reliability in marine, mining, oil and gas, and power generation environments. At the heart of its dependable operation lies a robust fuel system, which includes the fuel pump, regulator gaskets, filtration components, and control accessories. Diesel Pro Power offers a full selection of replacement and upgrade components to keep your QSK19 engine running at peak efficiency. Below, you'll find a comprehensive catalog of fuel system parts designed specifically for the QSK19 and compatible engines.

Fuel Pump Regulator Gasket Set for Cummins QSK19

The fuel pump regulator gasket set ensures a proper seal between the regulator and the fuel pump body, preventing leaks, maintaining fuel pressure integrity, and protecting against air ingress. This gasket set is essential during fuel pump rebuilds or when replacing the regulator.

• Compatible With: Cummins QSK19, KTA19, KTA38, KTA50
  
  

• Purpose: Ensures proper sealing for fuel pressure regulation
  
  

• Usage Tip: Replace during every pump overhaul to avoid fuel pressure fluctuations
  
  

Fuel Pump Gasket – Coupling Seal for QSK19

This fuel pump gasket is specifically designed for sealing the coupling between the fuel pump and the engine block or timing gear case. A worn gasket can lead to fuel seepage or air introduction, compromising system performance.

• Applications: L10, M11, N14, NH855, NT855, QSK Series
  
  

• Material: Heat-resistant composite for extended service life
  
  

• Maintenance Note: Recommended replacement interval with any coupling service
  
  

Fuel Filters & Water Separators

Clean fuel is critical for high-horsepower engines like the QSK19. Contaminated diesel can cause injector damage, loss of power, and reduced engine life. Our high-efficiency fuel filters and water separators help protect your engine investment.

Primary Fuel Filter & Water Separator – Cummins 3329289

This large-capacity filter serves as the primary defense against dirt, water, and microbial contamination before fuel reaches the high-pressure injection system.

• Dimensions: 3.66" diameter, 9.92" height
  
  

• Thread Size: 1-14 UN
  
  

• Features: Integrated water separation and high-capacity dirt holding
  
  

• Usage: Ideal for QSK19-powered vessels, generators, and equipment
  
  

Fuel Filter Removal Tools

Servicing a fuel system shouldn’t require brute force. Our fuel filter removal wrench simplifies the process.

Fuel Filter Removal Wrench – 3-7/16" to 3-3/4"

This wrench is compatible with both Cummins and Detroit Diesel filter housings and offers an adjustable grip to fit various diameters.

• Range: 3-7/16" to 3-3/4"
  
  

• Material: Industrial-grade steel for durability in marine and industrial settings
  
  

• Use Case: Perfect for on-site maintenance teams or remote operation technicians
  
  

Racor Replacement Filters – Water Separators

Water contamination is one of the most common causes of fuel system damage. Racor-type water separators provide reliable, multi-stage filtration to protect sensitive components in your QSK19 engine.

Complete Filter Units

• 500, 900, 1000 Series Racor Replacement Units
  
  

• 500 Series: Compact filtration for auxiliary engines and generators
  
  

• 900 Series: Medium-duty capacity for main engines
  
  

• 1000 Series: Large-frame filtration for high-demand operations
  
  

• Includes: Filter head, bowl, and element
  
  

Filter Elements by Micron Rating

• 2010, 2040, 2020 Filter Elements
  
  

• Brown Top – 2 Micron: Maximum water and fine particulate filtration
  
  

• Red Top – 30 Micron: High-flow primary filtration
  
  

• Compatibility: Use with 500/900/1000 Racor-style units
  
  

When to Use 2 Micron vs. 30 Micron:

• 2 Micron: Ideal for secondary filtration just before injectors
  
  

• 30 Micron: Primary filtration from the tank; removes large particles and water
  
  

Marine Zinc for Fuel Coolers

Marine environments demand added protection from galvanic corrosion. Our Cummins-compatible zincs are installed in the fuel cooler or oil cooler and dissolve over time to shield critical components.

• Thread Size: 3/8” NPT
  
  

• Zinc Length: 1”
  
  

• Material: Zinc core with brass plug for marine-grade sealing
  
  

• Replacement Tip: Replace annually or at every major service interval
  
  

Electrical Components for Fuel System Monitoring & Control

Advanced fuel systems require accurate electronic monitoring and control. The Cummins QSK19 uses solenoids and pressure switches to automate and secure engine operation.

24V Fuel Shutoff Solenoid for Cummins QSK19

This two-stud, two-pole solenoid ensures rapid and secure fuel shutoff for engine protection or emergency shutdown procedures.

• Voltage: 24 Volts
  
  

• Application: Integrated into marine panels or power generation control circuits
  
  

• Benefit: Enhances safety and operational control in critical environments
  
  

Fuel & Oil Pressure Switches – Make/Break Style

Pressure switches provide a simple but vital way to monitor and react to fuel pressure changes. Available in multiple set points to match your system specifications.

• 5 PSI: Low-pressure fuel priming circuits
  
  

• 10 PSI: Basic engine fuel system checks
  
  

• 20 PSI: Secondary alert systems
  
  

• 27 PSI: Shutdown threshold for high-pressure systems
  
  

• Threading: 1/8” NPT
  
  

• Function: Make/break operation for gauges, alarms, or shutdown triggers
  
  

Importance of Proper Switch Rating

Selecting the correct PSI make/break switch ensures the engine receives fuel pressure monitoring that matches its design specs. Installing an improperly rated switch can lead to false alarms or failure to detect actual faults.

Gauges for Fuel System Pressure & Monitoring

We offer both mechanical and electrical gauges for fuel system monitoring. Whether you're overseeing a marine generator set or a mining machine powered by the QSK19, accurate fuel pressure data is essential.

Mechanical Gauges

• Standard Mechanical Gauges: Basic readouts for on-engine mounting
  
  

• Mechanical Gauges with Alarm: Include integrated contact points for warning indicators
  
  

Electrical Gauges

• 12V and 24V Variants: Compatible with various panel configurations
  
  

• Application: Ideal for remote monitoring setups or engine rooms with multiple fuel circuits
  
  

Why Diesel Pro Power for Cummins QSK19 Fuel System Parts?

Diesel Pro Power has served over 40,000 satisfied customers with quality aftermarket and OEM-compatible parts for Cummins engines. Here’s what sets us apart:

• Global Shipping: Fast delivery to marine ports, job sites, and industrial operations
  
  

• Expert Support: In-house diesel specialists available to assist with part selection
  
  

• Inventory Depth: We carry both core components and hard-to-find accessories
  
  

• Ease of Ordering: Intuitive online catalog and multi-language support
  
  

Troubleshooting Common Fuel System Issues on the Cummins QSK19

Even with a robust fuel system, operational challenges can arise. Here’s a breakdown of the most common QSK19 fuel system problems and how our parts can solve them.

Air Intrusion & Fuel Pressure Drop

• Symptoms: Hard starting, white smoke, loss of power
  
  

• Solution: Replace fuel pump regulator gasket set and coupling gasket
  
  

Water in Fuel

• Symptoms: Injector damage, fuel pump failure
  
  

• Solution: Upgrade to Racor-style 2 Micron separators and change filters at shorter intervals in humid or marine conditions
  
  

Fuel Pump Shutdown

• Symptoms: Engine stalls, fails to start
  
  

• Solution: Inspect and replace 24V solenoid and test pressure switches for false triggering
  
  

Erratic Gauge Readings

• Symptoms: Fuel pressure gauge bouncing or false alarms
  
  

• Solution: Replace worn-out mechanical or electrical gauges and verify wiring integrity
  
  

Best Practices for Maintaining the QSK19 Fuel System

Proper maintenance of your Cummins QSK19 fuel system ensures optimal engine efficiency and long-term reliability.

• Inspect seals and gaskets every 250 operating hours
  
  

• Change fuel filters every 250–500 hours depending on environment
  
  

• Test pressure switches and gauges annually
  
  

• Use only marine-rated zincs and replace them before they fully degrade
  
  

• Flush water separators during every fuel service interval